An assembly line has been designed to make battery-powered beverage mixers. Task details are shown in the table below:
Station Task Assigned Task Time (minutes)
1 1 3.0
2 3; 4 1.5; 2.0
3 2; 5; 6 1.5; 1.5; 1.0
4 7 3.0
5 8 2.5
6 9; 10; 11 2.0; 1.0; 1.0
a. What is the assigned cycle time (in minutes)?
b. What is the maximum output rate of this line in mixers per hour?
c. What is the total idle time per cycle?
d. What is the assembly line's efficiency?
Cycle time is 4.0 minutes (governed by stations 3 and 6). Maximum output is 60/4 = 15.0 units per hour. Idle time is 1.0 + 0.5 + 0.0 + 1.0 + 1.5 + 0 = 4.0 minutes. Efficiency is 20.0/24.0 = 83.3%.
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